Tag Archives: Bt cotton

Home   Tag : Bt cotton

Is Bt Cotton Seed Shortage real?

This year there is news of shortage of Bt cotton seeds everywhere. How far this is true? If one examines the sequence of events, and the facts related to private seed production, the truth appears to be otherwise. From March, 2011, onwards, private seed industry has been lobbying with the State governments to increase Bt cotton seed. They were instrumental in bringing together various Agricultural Ministers in Ahmedabad to discuss this. Subsequently, Gujarat increased the seed prices, followed by Karnataka and other States. There was intense pressure in Andhra Pradesh, to increase the seed prices. Government also organized series of meetings, claiming it is only to discuss fixing of seed […]

Microbial properties, enzyme activities and the persistence of exogenous proteins in soil under consecutive cultivation of transgenic cottons (Gossypium hirsutum L.)

PLANT SOIL ENVIRON., 57, 2011 (2): 67–74 67 Download Z.H. Chen, L.J. Chen, Y.L. Zhang, Z.J. Wu Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China ABSTRACT One Bacillus thuringiensis (Bt) and two stacked Bt and cowpea trypsin inhibitor (Bt + CpTI) cottons and their non-transgenic isolines were consecutively cultivated to investigate the soil persistence of Cry1Ac and CpTI pro­teins and their effects on microbial properties and enzyme activities involving C, N, P, and S cycling in soil. Results showed that there were the persistence of Cry1Ac and CpTI proteins in soil under 4-year consecutive cultivation of transgenic cottons. Cry1Ac proteins varied from 6.75 ng/g to 12.01 ng/g […]

Gene alarm on GM crops

http://www.telegraphindia.com/1110603/jsp/nation/story_14065280.jsp New Delhi, June 2: Indian scientists have discovered that the genetic modification of plants with a gene already used in crops worldwide may severely damage the plants, a surprising finding that may stir a debate on current crop biotechnology science. The scientists at the University of Delhi have shown that inserting a bacterial gene that makes a protein named Cry1Ac into genomes of plants appears to cause developmental defects, growth retardation and sterility in the plants. Several experimental and commercial genetically-modified plants, including GM cotton cultivated in India and other countries, make the Cry1Ac protein which is toxic to some insects. The insects die when they try to eat […]

The expression of Bt endotoxin Cry1Ac has detrimental effect on the in vitro regeneration as well as in vivo growth and development of tobacco and cotton transgenics

Press release Download the article There has been considerable interest and activity in genetically engineering insect-resistant crop plants using Cry genes encoding insect toxins from the soil bacterium Bacillus thuringiensis. The proteins encoded by Cry genes are called Bt-toxins and are thought to specifically affect only certain insects and not other organisms. A paper (Rawat et al., 2011) from the laboratory of Dr. Pradeep Burma (Department of Genetics, University of Delhi South Campus) in the June issue of Journal of Biosciences now reports that expression of the Bt-toxin Cry1Ac in cotton and tobacco is detrimental to growth and development of the plants. Many of the transgenic plants obtained showed developmental […]

Get Best Services from Our Business.
%d bloggers like this: